Whitening injection is also risky, its risk is mainly reflected in the following three aspects: First, the process of injecting whitening injections into the veins, due to improper operation of the operator, may destroy the blood vessels, local bruising or hematoma may appear. Second, allergic reactions, the main component of whitening injections is a variety of whitening drugs mixed together, the process of injecting drugs into the vein, a very small number of people will have an allergic reaction to one or more of the drugs. In mild cases, the local skin may become red and rash, the patient will feel pain, and in severe cases, shock and death may occur. Third, infection, in the process of injecting whitening needles, bacteria and viruses may enter the blood vessels with the needles. If the infection is only local, the patient may have local pain and need to take oral antibiotics. If the infection enters the whole body with the blood, the patient may have a fever, usually between 38-40℃, which requires intravenous antibiotics to be used.